GCN Circulars
GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
16 results found.
- VLA radio detection of GRB 081221
- VLA radio observation of GRB 081221
- GRB 081221: GROND observations
- GRB 081221: Probable host galaxy in Keck imaging
- GRB 081221, Swift-BAT refined analysis
- GRB 081222: Swift XRT refined analysis
- GRB081221: Fermi GBM observation
- Swift/UVOT observations of GRB 081221
- GRB 081221: Swift-XRT Refined Analysis
- GRB 081221: pseudo-redshift (pz=0.7) from the spectral parameters of the prompt emission
- GRB 081221: Gemini-N nIR imaging
- Konus-Wind observation of GRB 081221
- GRB 081221: Enhanced Swift-XRT position
- GRB 081221: further NOT observations
- GRB 081221: NOT observations
- GRB 081221: Swift detection of a burst